Before switching on the Lenovo laptop, ensure that it has enough power or that you have plugged it into the charger. Locate the power button, which is usually identified by a power icon, and press it once. The laptop should take some time to switch on and show the Lenovo logo. In case your laptop fails to switch on, try to examine the charger, plug, and the charging light. You will find more instructions from DataRecovee regarding such problems. https://datarecovee.com/knowledge-base/how-to-turn-on-lenovo-laptop/